25mm board, how many pieces are there in a cube. How many boards are in a cube: how to make calculations using various methods

Calculation of the cubic capacity of boards will depend on whether the board is edged (including planed) or unedged. In the first case, it is easier to calculate the cubic capacity, since the lumber has the correct geometric shape of a parallelepiped. The cubic capacity of an unedged board - one whose sides are unprocessed, fast - is calculated somewhat differently.

Fortunately, calculating the cubic capacity of the board is not difficult. Either will help you with this table “How many boards in a cube”, or formula. The latter option is more reliable and more accurate.

Calculation of cubic capacity of edged boards

How many boards are in a cube (table)

From this table you can find out answers to the following popular questions: how to calculate the cubic capacity of boards, how many boards are in a cube, how many square meters boards in a cube, how many cubes are in one board according to the most popular sizes.

Edged board

Cubic capacity of edged boards 50 millimeters thick

Cubic capacity of edged boards 40 millimeters thick

The cubic capacity of edged boards is 32 millimeters thick

Cubic capacity of edged boards 30 millimeters thick

The cubic capacity of edged boards is 25 millimeters thick

Cubic capacity of edged boards 20 millimeters thick

where a is the thickness of the board

b – its width

l – its length

Board cubic capacity are calculated in cubic meters, so before calculating the cubic capacity of the board, all values ​​are converted from millimeters to meters. For example, let’s take a “magpie” board 40*200*6000: its thickness is 40 mm (0.04 m), width 200 mm (0.02 m), length – 6000 mm (6 m). Now we calculate the cubic capacity of the boards:

0.04*0.2*6=0.048 m 3

That is, one “magpie” board 100*6000 has a cubic capacity of 0.048 m 3. To determine, how many boards per cube e, all that remains is to divide 1 by the resulting amount:

1/0.048=21 boards in 1 m3.

Calculation of cubic capacity of unedged boards

Not edged board differs from edged in that it is not processed on the sides, that is, one side has irregular shape, and it is impossible to indicate the exact width of an unedged board. This is where difficulties arise with calculating the cubic capacity of unedged boards, which are easier to explain with a specific example.

Unedged board

Suppose you need to cover a rectangular building measuring 5*7 meters and 4 meters high with unedged boards. Your board is 50 millimeters (0.05 m) thick.

First, calculate the finishing area. To do this (remember the school), we multiply the perimeter of the building (two sides by 5, two sides by 7 - a total of 24 meters) by the height - 4 meters. We get 96 m2.

Now we multiply the area by the thickness of the material: 96 * 0.05 = 4.8 m 3

It turns out that for cladding, the width of each cladding element has virtually no effect on the overall cubic capacity. There are no exact cubic capacity tables for unedged boards and there cannot be, since it is not known from what part of the log the board was cut and what its thickness is on both sides, but it can be given some average data on the cubic capacity of unedged boards:

Calculating the cubic capacity of boards: what you need to remember

All board manufacturing companies round the numbers in the direction that is beneficial to them. An error occurs. In general, it’s small, but when it comes to hundreds of cubes or a lack of boards for cladding, the issue becomes acute. For example, the volume of one board is 0.018 m3, and the manufacturer rounded this figure to 0.02 m3. As a result, instead of the expected 55 boards, you will receive only 50. Therefore, always check with sellers for this information.

We hope our article shed light on questions about how many boards are in a cube, how to calculate the cubic capacity of a board, how many boards are in a cube, and how not to get into trouble when buying lumber.

How to determine the cubic capacity (volume) of a material? This is very simple if the material, as in our case, has right angles. You need to multiply the width by the thickness and the length. To find out how much of this material is in a cube, you need to divide the result by cubic meter/meter. Here is an example of how to determine how many boards with dimensions 50x150x6000mm are in a cube. We will decide in centimeters.

(Thickness) 5cm x (Width) 15cm x (Length) 600cm = 45000 cc/cm

The cube is = 100cm x 100cm x 100cm = 1000000 cc/cm

(Cube/meter) 1,000,000: (Board) 45,000 = There are 22.22 boards in a cube.

If you want to know how many square meters in a cube lumber, you need to divide the thickness of the board in centimeters by 100 centimeters. Let's say you buy a 12.5mm x 90mm lining and know that its square meter costs 120 rubles. The solution will be like this.

Lining thickness 1.25 cm 100: 1.25 = 80

It follows from this that this lining in a cube will be 80 square meters. And that a cube of this lining will cost 80x120=9600 rubles

To simplify the calculation, we have prepared a summary table for you. The tables below provide data on the volume of one timber and how many pieces of timber different sizes in the 1st cube. To make you feel comfortable.

How many pieces of edged and profiled timber are in 1 cube table

How to calculate how much timber is in 1 cube?

We offer a simple calculation so that you do not get confused with the question of how to find out how much timber is in a cube. These calculation options are suitable if you know the dimensions of the timber. For example, let's take a beam 260 x 260 x 6,000 mm (6 meters). The same can be done for timber measuring 3 meters, 4 meters, 5 meters.

Formula for calculating the volume of timber:
100mm · 100mm · 6000 mm = 0.1m · 0.1m · 6m = 0.06 m3

Formula for calculating timber in pieces:
Beam length - 6 meters
1m3 / 0.06m3 = 16 pcs/m3

Difficult? Apparently not! But if the calculation is difficult for you, just use our table. The table contains calculations for all known sizes of timber, which are given in GOST 8486-86.

The page contains answers to simple questions from people:

• How much timber
• How many cubes of timber
• How many cubes of timber?
• How much timber do you need?
• How much in one cube
• How many pieces in a cube
• How many bars are in a cube
• How to calculate how much timber is in 1 cube

Why know how much timber is in 1 cube?

There are two reasons for this:

1. You can immediately calculate the total price of the volume of timber you need. To do this, you need to know the volume of 1 piece of timber, the price for 1 cubic meter and how many pieces in total you will need to implement your plans.
2. You can count total number units of timber needed to complete the project. And this can be done by knowing how many cubes are required for the work, and by calculating the number of pieces of timber in 1 cube.

There is no construction project that could be completed without the use of lumber.

Therefore, there is a need to determine their exact number. You can calculate how many boards are in 1 cube using formulas, or you can use ready-made tables. These tables are called cubic tables.

Please note that we are talking about wood products here. coniferous species.

What is cubic capacity

In general, this is the volume of a body, expressed in cubic measures.

The cubic capacity of lumber is the volume of lumber expressed in cubic meters, otherwise - in cubic meters or simply in cubes.

Types of lumber

In this section we will talk about lumber in the order in which they are obtained when cutting a log.

Obapole and croaker

For some reason, there is confusion with the definition of these materials: some claim that they are one and the same thing, and others claim that both sexes are made from slabs.

The proposed table will provide complete clarity.

As can be seen from the table, both sexes are not used in construction, so we will not consider it further.

The requirements for slab are standardized in accordance with OST 13-28-74. This means that croaker is a valuable building material.

The croaker is used:

• for installing a subfloor;
• roof sheathing;
• production of formwork.

Unedged board

It is sawn along two opposite surfaces, called layers. The edges are left uncut, hence the name.

Her standard sizes the following: thickness - 25, 40 and 50 mm; length - 6 m.

The scope of application is wider than that of the slab.

Also used for construction:

• warehouses;
• utility rooms;
• temporary fences;
• awnings

In addition, it can serve as a base for clapboard cladding, block house and other finishing materials.

Edged board

It differs from unedged in that it is propylene along the faces and edges.

Used as:

• roof sheathing;
• wall lathing frame houses;
• racks and braces of frame houses;
• stairs;
• material for making country furniture etc.

timber

This is lumber with a thickness of 100 mm or more with a difference in cross-sectional width and height of no more than twice. Usually the timber is of square section. The most used timber has a section of 100 × 100 mm and 150 × 150 mm.

Used:

• in the construction of frame houses in the form of posts and beams;
• as a material for external and interior walls wooden houses;
• for the construction of stairs, fences, etc.

Bar

It differs from timber in that maximum size its cross-section is 75 mm. Like timber, it is most often made with square section.

Is used for interior works such as device:

• stairs;
• railing;
• window sills;
• bases for finishing cladding;
• roof counter-lattices.

How to calculate the number of boards in a cube

Edged board

As you know from the course high school, the volume of a rectangular parallelepiped (and the edged board, beam and block are exactly that) is equal to the product of the lengths of its sides.

Calculated using formula 1:

where: V – volume; L – length; b – width; h – height (in our case thickness) of the board.

Having calculated the volume in this way, you can easily find the number of boards in a cube.

To do this, you need to divide one by the resulting number (formula 2):

where: N – number of pieces, 1 – 1 cubic meter. m, V – volume.

It should not be forgotten that the dimensions edged materials are given in millimeters, so they must be converted to meters before calculation.

Example

There is lumber with the following parameters:

25 × 150 × 6000, where 25 is the thickness; 150 – width; 6000 – length.

Let's calculate the cubic capacity of the board.

To do this, convert millimeters to meters and substitute the resulting values ​​into formula 1:

V = 0.025 × 0.15 × 6 = 0.0225

We substitute the resulting number into formula 2:

N = 1 ÷ 0.0225 = 44.4

The result is always rounded to whole numbers by discarding the decimal part.

Thus, one cube contains 44 whole boards.

Unedged board

Solving the previous problem in this case is more difficult.

The unedged one has a large difference in width on opposite layers, so when calculating the volume, you need to substitute the average width into formula 1: these two widths are added and the resulting amount is divided in half.

The measurement result is rounded to the nearest 10 mm, fractions up to 5 mm are not taken into account, and fractions of 5 mm or more are considered 10 mm.

In addition, uncut edges do not allow the board to be stacked tightly, and various increasing factors are used to calculate the exact volume.

The calculation method is not so much complicated as it is tedious, so it is easier to use the table from the next section.

Tongue and groove boards and lining

They differ from each other only in size, so the calculation method for them is the same.

They are mounted using the tongue and groove system, as shown in the figure.

In this case, the width b is taken to be the so-called “working” or “visible” width - the distance from the base of the tongue to the edge of the board (see figure). It is this size that should be substituted into formula 1.

Tables of the number of boards in a cube

In order not to calculate the quantity and volume each time, special cube tables were compiled, in which for each size of material its quantity in one cubic meter is given.

4 meter boards

6 meter boards

4 meter timber

6 meter timber

Unedged material

Due to the wide range of sizes in length, thickness and width, it is impossible to calculate the exact amount of slab in one cube, so there is no cubature table for it.

Here is a table for converting the folded volume of a slab into a dense one.

In this case, we solve the inverse problem: we determine the actual volume of a known amount of slab.

To do this you need:

1. Disassemble the slab into debarked (from which the thickest end closest to the tree root has been removed) and unbarked.
2. Sort by length - up to 2 meters and more than 2 meters.
3. If necessary, sort by thickness.
4. Place in a bag, alternating thin and thick ends.
5. Calculate the folded volume of the package.
6. Select the appropriate coefficient from the table and determine the actual (dense) volume.

Cube for unedged boards.

Coverage area calculation

When the main construction is completed, it's time to start finishing works: sheathe walls and lay clean floors.

To do this, remember formula 1. When calculating the volume of one element, we write down the intermediate result - the product:

where S is the area of ​​this element.

Having calculated the quantity using formula 2, we multiply the result by the area.

Video

This video contains data that was not included in the article.

Before the beginning construction work Any owner of land on which it is planned to build a residential building wants to know how much material will be required. Financial costs will depend on the volume of building materials and their type, which can be difficult for some owners to bear at one time, and they are forced to purchase various materials step by step. In low-rise housing construction, wood and products made from it make up a significant part. Therefore, it is advisable to know how many boards will be needed and how much they will cost.

Thanks to accurate calculation number of boards, you can save a lot and not be deceived

Characteristics of wood materials

Currently, the building materials market offers various wood materials at a price in rubles per cubic meter. If it is known how many boards will be needed for arranging the floor, I would like to know their price. In addition, construction requires different kinds wooden products, differing in shape, size and price. Therefore, before studying the question of how many boards are in a cube, it is necessary to study the range of offered wooden products. To build your future home, the future homeowner may need:

• profiled timber of square or rectangular cross-section, the smaller side of which exceeds 100.0 millimeters;
• a block whose dimensions are:
• ü 16.0…75.0 millimeters for products sawn from coniferous wood;
• ü 19.0…100.0 millimeters for hardwood.
• edged board, processed in three planes, with a thickness of more than 20.0 millimeters, the width of which varies widely;
• unedged board having two sawn sides, the side edges of which are unprocessed;
• croaker, which is lumber half sawn from round timber ;
• terrace board http://www.ecowood.com.ua/catalog/terrasnaya-doska for flooring.

The greatest financial costs will be required for the purchase of the first three types of lumber, so solving the question of how many timber, whetstones or boards are in a cube is most relevant.

Accurate calculation of the amount of lumber in one cubic meter (1 m³)

The task of determining how many boards are in a cube is at the level of arithmetic tasks solved in the first grade. The initial data for calculating how many timber, bars or boards are in a cube are:

• z – number of boards (pieces);
• h – thickness of the board (smaller sectional size of the bar) in meters;
• b – width of lumber (meters)
• L – length of a unit of lumber (meters).

The volume (V) of one product (board, beam or bar) is determined by the ratio:

V = h×b×L, cubic meters,

and the number of units of lumber in cubic meter let's define it as:

Of course, this calculation is quite approximate - it does not take into account the gap between individual products, the type of board processing (grooved, planed), length allowance and other rather specific details. Using the above formulas, it is impossible to calculate the amount of unedged boards or slabs. However, to determine what amount to take with you to the lumber yard, and whether an extra thousand rubles would be a problem there, accuracy is sufficient. More accurate results can be obtained using the tabular calculation method.

Tabular determination of the amount of lumber

To determine how many boards are in 1 cube, the calculation table contains columns and rows. The lines indicate cross section lumber, and the columns (rows) show the calculated values ​​of the volume of one board and the number of boards in one cubic meter. In principle, these values ​​are obtained by calculation, but taking into account correction factors. Let's consider a cutting (part) of the table of how many boards are in 1 cube. Wherein symbols correspond to those used in the above formulas.

Table for calculating the number of boards in 1 cube

Table for calculating the amount of timber in 1 cube

Calculation table for non-standard boards and timber